Calcinatory.



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No. 664,980. Patented lari. I, l90l.

^ `(2. THAGKEBAY. i

GALGINATURY.

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c. THACKERAY.

CALCINATURY.

(Application led Mar. 17, 1900.)

(N0 Model.)

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C. THACKERAY. CALCINATURY.

(Application med nu. 17, 1900.)

(No Model.)

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ATENT CHARLES THACKERAY, OF MONTREAL, CANADA.

CALCINATORY.

SPECIFICATION forming part of Letters Patent No'. 664,980, dated January 1, 1901.

Application filed March 17, 1900, Serial No. 9,123. (No model.)

To all whom t may concern:

Beit known that I, CHARLES THAOKERAY, of the city of Montreal, in the district of Montreal and Province of Quebec, Canada, have invented certain new and useful Improvements in Calcinatories; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention has for its object to provide means for the simultaneous destruction of night soil, garbage, and general refuse, whether wet or dry, and that will insure, first, the dissipation of the moisture contained in the substance to be calcined and then the destruction of the dried substance and the septic and other poisonous gases liberated therefrom by the said dissipation of the moisture.

To this end the invention may be said, briefly, to consist of a calcining-furnace above which one or more drying-chambers are lo-A cated and from which said drying chamber or chambers are separated by a partition or partitions pervious to heat, preferably in the form of sheet-iron trap-doors, these chambers being in communication withl the calciningfurnace also bysuitable passages of peculiar construction, and heated pure-air supplies are provided,respectively,near the point at which said passages join the furnace and near the place where the substance to be calcined is located within the furnace.

Two batteries of these calcining-furnaces, with their drying-chambers, are preferably provided and arranged back to back, with a main flue and an air-chamber between said batteries and communicating with the furnaces of each of said batteries.

Fora full comprehension, however, of my invention reference must be had to the accompanying drawings, in which like symbols indicate the same parts, and wherein- Figure 1 is a vertical transverse sectional View of my improved calcinatory, taken on line A A, Fig. 2. Fig. 2 is a horizontal sectional view taken on line B B, Fig. 4; and Fig. 3 is a transverse vertical sectional view taken on line C C, Fig. 2. Fig. 4 is a sectional View on line D D, Fig. 2. Fig. 5 is a vertical sectional View taken longitudinally through the main flue and looking toward the rear of the animal-crematory.

My improved calcinatory is located in any suitable building 2 and with the top thereof tery is made up of a series of cells, and each" cell consists of a calcining-chamber 7, a drying-chamber 8, and a receiving-chamber 9, the front of the lower portion of the calcining-chamber being extended outwardly and constituting a furnace 10.

Each furnace is constructed with the usual metallic front 12, provided with ash-pit and fire doors 13 and 14, respectively, and a gratesection 15, all of ordinary construction.

The longitudinal outer walls 16 and 17, common to all the cells of the calcinatory, are of sufficient depth to accommodate the furnaces and a series of iiues.

Each calcining-chamber 7 has its door 18 inclined downwardly from the rear thereof to the grate-section of the furnace, while the upper portion of each wall thereof is curved inwardly to form a four-sided arch and contract the upper end of said chamber. This contracted upper end communicates with the lower end of a hollow sheet-metal section 20, preferably square in cross-section and with the sides of its upper end inclined inwardly to constitute the inner walls of a passage 22, triangular in cross-section. A second triangular passage 23 is formed about midway of the height of said sheet-metal section by an angular plate 24 of sheet metal,

and a third passage 25 is similarly formed by an angular plate 26 on alevel with the top of the arch of the calcining-chamber7. This sheet-metal-section 20 is transversely divided about. midway of its height into subchambers constituting the receiving and drying chambers 9 and 8, before mentioned, bya pair of downwardly opening sheet-metal trapdoors 29, hinged to the apex of the angular plate 24, while the lower end of the lower subchamber 27 is closed by downwardly-opening trap-doors 30, hinged to the apex of the angular plate 26, and the upper end of the upper subchamber 28 is closed by a rigid plate 31, to the edge whereof an upwardly-opening sheet-metal trap-door 32 is hinged. A pair IOO siv

of chambers 33 and 34, respectively encircling said respective subchambers 9 and S,are formed by an arch 35 about on a level with the middle triangular passage and an arch 36 about on a level with the top triangular passage, the outer walls of which rest upon said latter arch. The encircling chamber 34 is provided with abafing-Wall 37, and the middle and lower arches 35 have vertical openings cut therethrough in line with one another, while a pair of walls 40 bisect the chamber 33 and extend upwardly at each side of said openings from the lower to the middle arches, thereby forming a line 41, communicating at its lower and upper ends, respectively, with the calcining-ehamber and the upper encircling chamber 34. The latter chamber 34 communicates by a diagonal flue 42 with an auxiliary flue (to be presently described) leading to the main flue, (also to be presently described,) which leads to the chimney 99.

Vertical flues 43 are formedin the outer longitudinal Walls 16 and 17, with the lower ends of each communicating with one of the furnaces and controlled by a slide-damper 44 and their upper ends blinded, While a pair of vertical flues 45 are located one on each side of each of the flues 43 and comm unieate therewith by vents 46 through their dividing- Walls. Theselatterflueshavetheirlowerends blinded, and the upper ends of each pair comn1 unicate with the top triangular passage 22 by diagonal flues 47, and the lowerends thereby communicate with the encircling chamber 33 by Vents 43. The triangular passages 23 and 25 comm unicate with the chamber 33 by means of vents 49 and 5i), cut in the wall of the sheetmetal section 20, while the calcining-chamber 7, drying-chamber 8, and receiving-chamber 9 each communicate with the respective triangular passages 25, 23, and 22 through slits 51 inthe lower inclined wall of the rear portion and the rear half of each of the side portions of said triangular passages.

An arched passage divides the batteries from one another and is divided about midway of its height by an arch 52 into a main smoke-liuc 53 and an air-chamber 54. The main smoke-flue 53 abuts at one end against one of the side walls of the calcinatory, and its opposite end is offset to partially inclo'se an animal-eren]atory, to be hereinafter described, and then communicates With the chimney. A space 56 is provided between the said wall and the adjacent ends of the batteries, and spaces 57 similar to the space 56 divide the cells of each battery from one another and from the opposite side wall 58 of the calcinatory. A portion of each of these spaces 57 is cut olf by a partition 59 to form an auxiliary flue 60, before mentioned, comm unicating with the chamber 34 through the said veut 42 and with the main flue by a vent 61, controlled by a hanging or 'flap damper 6i,

actuated by'a chain G3 or other suitable means. The air-chamber 54 opens at one end into the space 56, which incidentally constitutes a passage from one to the other of the furnace-rooms 65, and each of the spaces 57 communicates With the main air-chamber 54 by ports 67, thereby constituting a series of auxiliary air-chambers. These auxiliary air-chambers 57 supply air to the furnaces through a series of tapered twyers 68 and to the adjoining ealcining-chambers, and at the rear of said calciuing chambers through twyers 70, leading from air-passages 71, communicating with the ports 67.

The sheet-metal trap-doors 2S) and 30 are raised and lowered and supported in their raised position as follows: A chain 75, equal in length to the space between the free ends of each of said pairs of doors when open,takes through a ring 76 upon the end of 'a main length of chain 77, and the ends of said small chain are connected to the said free ends of the said doors, While said main length of chain takes through an opening iu the rigid plate 31 and over a pulley 78 and has a handle 78 upon its free end. An enlarged link 79 in each chain prevents its being drawn too far through the opening in the rigid plate, and said doors are supportedin their raised positions by pins 80, passed through a link of each main length and resting upon said rigid plate.

The auimal-crematory, before mentioned, consists of a rectangular chamber 81 with a dumping trap-door 82 in its roof and a firedoor 33 opening intoa furnace-room 34. An air-passage S5 extends longitudinally through the rear wall 86, and one (87) of the Walls of the animal-crematory, and the wall 38, that separates the oii'set portion of the main flue from the said furnace-room S4. One end of this passage 35 communicates with said furnace-room through a series of air-inlets Sl), and the opposite end supplies air to the cre* inatory through twyers 90, while ilues 94 and 95 in the rear and inside end walls, respectively, of the crematory effect a communication between said crematory and the main flue 53.

In calcining with the above-described calcinatory fires are first started in the furnaces. A quantity of the substance to be calcined is then dumped into the receiving-chambers, the doors 32 closed, and the slide-dampcrs 44 opened sufficiently to cause a draft from the space above the floor 3 through each oi' said receiving-chambers, their slits 5l, passages 22, and flues 47, 45, 46, and 43 to the furnaces. The main draft through each cell of the calcinatory (which is the ellicient cause of the draft just mentioned) is fromthe ashpit of the furnace through the grate-section to the fire-chamber thereof, thence through the calcining-chamber 7, up flue 41, to chamber 34, around which it is caused to travel by bathing-Wall 37, and then by diagonal flue 42 to auxiliary Hue and main due 53 to the chimney. rlhe suction from this draft will, as before mentioned, draw the gases rising from the substance in the drying-chamber 9,

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cessano triangular passage. 22;. into said "passage32f2",.

the top trap-doors andbetween the doors and the surrounding portions of the floor 3,

and at the same time the gases rising from the substance i-n chamber 8 anda small proportion yfrom the oalcining-chamberj will be drawn through sliis 5l into the passages 23 and 25, thence to encircling chamber 33, and from there through lines 48, 45, 46, and 43 to the furnace lO, said gases being then mingled with pure heated air lroni the twyers G8 and subjected to an intense heat and all poisions contained therein destroyed, while the calcination of the substance in the cal- (Billing-chambers 7 is augmented by the pure heated air from the tWyers 69.

What I claim is as follows:

l. A calcinatory having` a calcining-chamber, means lor generating au intense heat in said chamber; a drying-clramber to receive thcsubstance to be calcined and located above said calciuiig-chamber; achamber encircling said drying-chamber; a sheet-metal partition separating said drying-chamber and said cal. cining-chainber; and means for emptying the contents of said chamber into said ealciningchamber; a ,flue leading from the rear ol' said calcining-cliamher to said encircling chamber and thence to the chimney connection; a flue leading from the top of said drying-chamber to the front ol` said calcin'i11g-chamber, subslaniially as described and lor the purpose set forth.

2. A oalcinatory having a calcining-chamber, means l'or generating an intense heat in said chamber; a drying-chamber to receive the substance lo be calcincd and located above said calcining-chamber; a chamber encircling said drying-chamber5 a pair of sheet-metal trap-doors sopa rating said drying-chamber and said calcining-chamber; and moans for supporting said doors and allowing them Lo open; a liuc loading l'rom the rear of said calcining-cliamber Lo said encircling chainller and thence to the chimney connection means for supplying air to said calcining-chamber; a liuc loading from the top ol laid dryingcliamher tothe iront ol' said @Mehring-clizia iler, substantially as described and for the purpose sol l'orth.

Il, ln a calcinalory a calciuing-charnberg moans for gcnmatingau intense heat in said oalrining-chamber; a vertical chamber lo cated alloro said calcining-chamber; a partition por-rions lo heat and dividing.r said vertical chaniliorinlo upper and lower subcha-mln-rs; an encircling passage at the upper cnil of tho upper snboimmbcr, thc upper portion ol' the walls of said upper subclmmbcr l|aving a serios of slits olli-cling a coniinunica ion lwluoen said opper snlichamlierandthoonk 'circling 'passage a second passage ,encircling tfhe'lup'perend of said lower suhohambenthe uppefrfportion of the wallsof said lower sub- 'chainher having a series of slits etfec'tingfa coin ni unie-ation betweensaid .lower suhcham-Y ,her and said, second encircling passage;'a

vertical line extending from the front of said ealciningchamber tothe irst-ineutionod'e'ncircling passage; a flue extending from said `second encircling passage to said verticalue,

substantially as described;andr for', th'efpurpose set forth.

e. In a calcinatory a .calcinirig-chamber;a

Y vertical cham ber located above said'Calciuing-i,

chamber; a partition pervious toheatauddi-k vidingsaid verticalcham berfinto `upper and lower subchainhers; an eucireliugpassage at the upper end of theupper subchainber, the

upper portion of the walls of said upper sub.-

chaxnber having a series of slits effecting a com munication between said upper subchamber and the encircling'passage; a second pas` sage encircling,l the upper end of' said lower suhchamber, the upper portion of the walls of saidlower subehamber having a series of slits effecting acommunicatiou between said lower subchamher and said secondencircling passage; a vertical llue extending from the freut ofA said calcining-chamber to the firstineutioned encircling passage; a chamber eucircling' said lower subchamher and communicating with theencircling passage at the upper end of said lower subchamber; a flue extending from said encircling chamber to said vertical line, substantially as described and for the purpose set forth.

5. A calcinatory having a chimney connection; a oalcining-chamber the frontwhereof is extended; a furnace formed in said ex-A ol' said hollow vertical sheet-metal section;v

an angular plate having a series of slits at the rear of its lower sides and secured to the interior ol said hollow section midway of its `lunght to forman encircling passage triangular in cross-section, said slits effecting a communication between said last-mentioned encircling passage and the upper cud of `the lower halt' of said hollow vertical sheet-metal section, an angulaiplate having a Series of slits at the rear of its lower sides and secured to the interior of said hollow section adjacent Y to its lower end, said slits ell'ecting a columnnication between said last-mentioned encircling passage and the top olf the calciningchamber; a pair of sheetnnctal trapdool's hinged respectively to the apex ol` ono ol' a pair ol' opposite walls ol' the loworniostcnoirA clingv passagr; a parof shcot-mctitl trap-doors Ahinged respectively to the apex of one of a pair ot the opposite walls of the middle encirand operating said doors; a. smoke-chamber formed in the walls of the calcinatory and encircling the upper" portion of said hollow section; a second chamber formed in the walls of .the calcinatory'and encircling the lower,

portion'of said hollow'section and communieating with said middle and lowermost encircling passages; a. iiue extending from the calcining-chsmber to said upper encircling chamber; affine extending from said upper encircling chamber to said chimney connection; a'. I

vertical liuc extending from the upperv encircling passage to the top of the furnace; a

damper for controlling the lower end of saidy extending from said hot-air chamber into the furnace; substantially as described.

In testimony whereof I have aiixed my signature in presence of two witnesses.

CHARLES-THACKERAY, lViitnesses:

FRED. J. SEARS, ARTHUR H. EVANS, 

